This paper focuses on the ride quality and operation stability of high-speed train by employing the lateral semi-active secondary suspension, First, the full-scale railway vehicle dynamics with 17-degree-of-free (DOF) are introduced, where German low disturbance and high disturbance track irregularities are considered. Then, in order to improve the operation stability and robust stability of the train system at the same time, the H∞ loop shaping controler is proposed. This controller has good results in dealing with the structural uncertainty of the system, and the coprime factorization decomposition uncertainty modeling used is more general and universal than other uncertainty modeling. Moreover, the train simulation model of CRH3 is established in SIMPACK. Finally, the German low and high disturbance track irregularities are employed to show the efficiency of the proposed loop-shaping-control-based semi-active suspension by comparing with the open loop.

Luping Yang. Ride Quality Improvement Based on the H∞ Loop Shaping Control Method for Semi-Active Suspension System of High Speed Train. Academic Journal of Engineering and Technology Science (2025), Vol. 8, Issue 3: 41-50. https://doi.org/10.25236/AJETS.2025.080307.

[1] Thompson A G. Design of active suspensions. Proceedings of the Institution of Mechanical Engineers, 1970, 185(1):553-563.

[2] Goodall R. Active railway suspensions: Implementation status and technological trends. Vehicle System Dynamics, 1997, 28(2-3):87-117.

[3] Goodall R M, Kortum W. Active controls in ground transportation-A review of the stare-of-the-art and future potential. Vehicle System Dynamics, 1983,12(4-5):225-257.

[4] Crosby M J, Karnopp D C. The active damper: a new concept for sock and vibration control. Shock and Vibration Bulletin, 1973,43(4).

[5] Karnopp, D. Design Principles for Vibration Control Systems Using Semi-Active Dampers. ASME Journal of Dynamic Systems, Measurement, and Control, 1990,112(3):448-455.

[6] L. Jezequel, V. Roberti, B.Ouyahia, and Y. Toutain, Improvement of very high speed trains comfort with preview semi-active suspensions, Vehicle System.Dynamics. 1992, 20(S1):299-313.

[7] Peel D J , Stanway R , Bullough W A . Dynamic modelling of an ER vibration damper for vehicle suspension applications[J]. Smart Materials & Structures, 1996, 5(5):591.

[8] Liao W H , Wang D H . Semiactive Vibration Control of Train Suspension Systems via Magnetorheological Dampers[J]. Journal of Intelligent Material Systems & Structures, 2003, 14(3):161-172.

[9] Lau Y K , Liao W H . Design and analysis of a magnetorheological damper for train suspension[C]// Smart Structures and Materials 2004 Conference. 2004.

[10] Fotoohi A , Yousefikoma A . Active control of train bogies with MR dampers[C]// Smart Structures & Materials. International Society for Optics and Photonics, 2006.

[11] Guo, Jin, Xu, et al. A new semi-active safety control strategy for high-speed railway vehicles[J]. Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility, 2015.

[12] Wang, D. H. , and W. H. Liao . "Semi-active suspension systems for railway vehicles using magnetorheological dampers. Part I: system integration and modelling." Vehicle System Dynamics.

[13] Wang, D. H. , and W. H. Liao . "Semi-active suspension systems for railway vehicles using magnetorheological dampers. Part II: simulation and analysis." Vehicle System.

[14] Qiao Z , Ding J J , Yang M L . LQG Control Based Lateral Active Secondary and Primary Suspensions of High-Speed Train for Ride Quality and Hunting Stability[J]. IET Control Theory & Applications, 2018, 12:1497-1504.

[15] Yu J S , You W H , Hur H M , et al. H∞ Control of Secondary Suspension in Railway Vehicles Equipped with a MR Damper[J]. Journal of the Korean Society for Precision Engineering, 2013, 30(10).

[16] Guo C , Gong X , Xuan S , et al. Semi-active H infinity control of high-speed railway vehicle suspension with magnetorheological dampers. 2013.

[17]Song, Yong Duan , and X. Yuan . "Low-cost Adaptive Fault-tolerant Approach for Semi-active Suspension Control of High Speed Trains."IEEE Transactions on Industrial Electronics(2016):1-1.

[18] Metin M , Guclu R . Active vibration control with comparative algorithms of half rail vehicle model under various track irregularities[J]. Journal of Vibration & Control, 2011, 17(10):1525-1539.

[19] Li G , Jin W , Chen C . Fuzzy Control Strategy for Train Lateral Semi-active Suspension Based on Particle Swarm Optimization[J]. Springer, Berlin, Heidelberg, 2012.

[20] Mcfarlane, D , K. Glover , and M. Noton . "Robust stabilization of a flexible space platform: an H∞, coprime factor approach." International Conference on Control IET, 1988.

[21] Civita, M. La , et al. "Design and Flight Testing of an H00 Controller for a Robotic Helicopter." Journal of Guidance, Control, and Dynamics 29.2(2006):485-494.

[22] Buerger, S. P. , and N. Hogan . "Complementary Stability and Loop Shaping for Improved Human–Robot Interaction."IEEE Transactions on Robotics 23.2(2007):232-244.

[23] Park, Kyihwan , et al. "An Active Vibration Isolation System Using a Loop Shaping Control Technique." IEEE/ASME International Conference on Mechtronic & Embedded Systems & Applications IEEE, 2008.